AI market intelligence for Betfair Exchange

If you're going to bet,
have a proppa one.

Proppa Bet scans Betfair Exchange markets with an ensemble of large language models, surfaces the biggest mispricings, and logs every call to a public track record you can audit line by line.

  • Public, auditable track record
  • Every prediction timestamped and priced
  • No inducements · 18+
Live track record
View all →
Predictions resolved
20
Win rate
25.0%
ROI (flat)
-41.3%
Brier score
0.1239
Live top edge
Winner
Other
MKT 34.1%AI 58.7%
+25 pts
Updated continuously. Source data and full CSV available on the track record page.
Ensemble
Base-rate · ref-class · red-team
Grounded
Live search citations on every call
Logged
Every prediction timestamped & priced
Betfair
Exchange-native, AU-legal
How it works

Four steps from market to edge.

We treat prediction markets like a research problem, not a hot take. Every step is automated, logged, and verifiable.

01

Ingest Betfair markets

We pull live markets, runners, prices and volume from the Betfair Exchange API across Politics, World Events, Culture and Economics.

02

Ensemble LLM pricing

Each runner is priced by an ensemble of prompt strategies (base-rate, reference-class, red-team) grounded with live search.

03

Surface the biggest edges

We rank by absolute gap between AI fair value and market-implied probability, filtered for liquidity and confidence.

04

Log everything, score later

Every call is recorded with timestamp, price, model version and reasoning. We auto-score against resolved outcomes.

Feature

Live Edges feed

Ranked mispricings across Politics, World Events, Culture and Economics. One click to the runner on Betfair.

Feature

Public Track Record

Brier score, ROI, win rate, calibration curve, biggest wins and honest losses. CSV export included.

Feature

Pro alerts · $29/mo

Real-time alerts when new edges clear your confidence threshold, plus priority Discord and the full model history.

Built for responsible Australian punters

Proppa Bet is market intelligence only. We never offer bonus inducements, guarantee outcomes, or promote chasing losses. If betting is causing harm, reach out to Gambling Help Online on 1800 858 858 or register at BetStop for national self-exclusion. All users must be 18 or older.